of horton



D. MclNTYREl COACH VENTILATOR. APPLICATION FILED Nov 8, I920.

- 1,417,268. Paten ed 1122 2 1922.

' gmmm jallaaflf 177i F UNITED STATES PATENT OFFICE.

DALLAS MCINTYRE, OF HORTON, KANSAS, ASSIGNOR OF ONE-HALF TO WILLIAM J'. STONE, OF HORTON, KANSAS.

COACH VENTILATOR.

specification of Letters Patent.

Patented May 23, 1922.

Application filed November 8, 1920: Serial No. 422,521.

a citizen of the United States, and resident or Morton, Brown County, State of Kensas, have invented a oer-tan new and useful Improvement in Coach Vei lators, of whicl'i the following is a coniple tion.

lnis invention relates to passenger car ventilators of such character as to proviso for a local circulation of air within the car and to occupy the position of the present ventilating windows round in the vertical supportin wall between the two decks of the roof or passenger coaches.

A. further object is to pZO'iiHCQa device of this character which not only forces fresh air into the coach but at the same time will withdraw stale air from another point in the coach.

Another object of the invention is to produce a device of the character described of cheap. strong, durable, inexpensive and eflicient character; and in order that it may be fully ui'iderstood, reference is to be had to the accompanying drwxing, in which:

Figure 1, is a side elevation of part of the two decks of a railroad coach roof equipped with my improved ventilator, taking the place of the ordinary yentilating windows found in railroad car construction.

Figure 2, is an end view of the ventilator with the car roof in section.

Figure 3. is a section on the line FIE-I'll of Figure 1. V

Figure 4%, is a section on the line lV l V of Figure l.

In the said drawing, where like reference characters identify corresponding parts in. all of the figures, is the lower deck of a coach roof, 2 the upper deck and 3 the supporting wall between the two decks.

1- is my improved Ventilator provided with air ducts or passageways 5 and 6 securely fastene to the wall 3 of the coach by means of bolts 3'. or they may be fastened in any other suitable manner. the ends of the ducts opening into and carrying the ventilator 4, and being closed at such ends by screens 5 and 6 respectively, to prevent the entry of cinders and dust into the coach.

The ventilator 4r is composed of two circular drums S and 9, open at both of their ends and being connected together by an open drum 10 of slightly larger diameter,

which may be bolted to the former drums as 11, or in any other suitable manner.

Within the circular drums 8 and 9 are circular truncated cones 12 and 13, securely fastened in position by. bolts 1e and engaging nuts 15, or in any other preferred or suitable manner. it will be noted, as shown clearly in Figure 3, that the cones extend at both ends outwardly of the drums 8 and 9, and that the outer diameter of the cones are of such size as to practically overlap and close the open mouths 8 and 9 so that when the coach is travelling in a predetermined direction, air may-' not enter the open mouth of the drums and impede the action of the air'currents set up within the ventilator.

At their inner ends, the cones 12 and 13 are provided with cross pieces 16 and 17, respectively, which may be riveted in position as shown in the drawing. Fitted through holes in the cross pieces is a shaft 18 on which is mounted a disk 19 of slightly larger diameter than the inner ends of the cones and provided with a bearing surface 20 of sufficient diameter to permit the disk to move slidably in either direction on the shaft, under the action of a draft entering cones 12 or 13 due to the travel of the coach.

The operation of the device is follows: For example, air is enterin cone 12 due to the travel of the coach. finder the action of this current of air, the disk 19 will be forced from its dotted position abutting cone 12 to its full line position abutting and closing the mouth of cone 13 to prevent the exit of air. The parts are so shaped and proportioned that the rapid passage of air through the drums .10 and 9 and out their open ends, will set up a suction which will draw stale air out of the coach through the duct 5, and this mixture of stale and fresh air will partly escape through the open end of drum 1O encircling drum 9, and part of the remainder will escape through the mouth 9 and that the rest will be forced through duct 6 into the coach. It will be. readily understood that the amount of fresh air within the device will be in excess of the amount of stale air, and that, therefore, the mixture forced. into the coach will be largely fresh air and a small amount of stale air. It has been found through experiment that this Ventilator sets up local current of air in a car, and that but eight of them, four to each side, will be needed for a large chair car, and but six, to a smail car, such as a combination baggage and smoker. Due to the double character of the ventilator, it will be apparent that the reversing of the coach or backward travel th'ereofwill not interfere with the functioning of the ventilator, but that in suchevent the disk 19, under the impact of air entering the ventilator through cone 13, will be slid upon shaft 18 until it is arrested by and closes the reduced or inner end of cone 12.

From the above description it will be apparent that I have produced a device of the character described which possesses all of the features of advantage pointed out as desirable, and while I have illustrated and described the preferred embodiment of the same, I reserve the right to all changes properly falling within the spirit and scope of the appended claims.

What I claim is:

1. A ventilator having a chamber extending longitudinally of the car and open at both ends and provided near each end with an opening in communication with the car, pair of alined truncated cones secured within and spaced from the walls of said chamber with their reduced ends adjacent, a diskarranged between and of substantially the same diameter as the reduced ends of: the cones and supporting means for said disk to permit it, under the impact of an inrush of air through one oi the cones, to slide rearwardly against and close the reduced end of the other cone.

2. A ventilator having a chamber extending lon itudinally of the car and open at both ends and provided near each end with an. opening in communication with the car, a pair of alined truncated cones secured within and spaced from the walls of said chamber with their reduced ends adjacent and their large ends projected beyond the adjacent ends of and of substantially the same diameter as the open ends of said chamber, a disk arranged between and of substantially the same diameter as the re duced ends of the cones and supporting means for said disk to permit it, under the impact of an inrush of air through one of the cones, to slide rearwardly against and close the reduced end of the other cone.

3. A ventilator having a chamber extending longitudinally of the car and open at both ends and provided near each end with an opening in communication with the car, a pair of alined truncated cones secured within and spaced from the walls of said chamber with their reduced ends adjacent, cross bars secured to the cones, a rod connecting the cross bars axially of the cones, and a disk slidably mounted on said rod and adapted to engage and close the reduced end of either of said cones.

4. A ventilator comprising a pair of alined open drums spaced apart, an en larged central drum connecting and enclosing the adjacent ends of said drums; the said first-named drums having side openings at intermediate points beyond the ends of said central drum,,conduits connecting said side openings with the interior of the car, a pair of alined truncated cones secured \vithinand spaced from the walls of said drums with their reduced ends adjacent, a disk arranged between and of substantially the same diameter as the reduced ends of disk to permit it, under the impact of an inrush of air through one of the cones,

to slide rearwardly against and close the reduced end of the other cone.

In testimony whereof, I hereunto aflix my signature.

DALLAS Mo INTYRE; 

